Nag is a Web-based application built upon the Horde Application Framework that provides a simple, clean interface for managing online task lists (i.e. TODO lists). It includes strong integration with the other Horde applications and offers shared task lists.

Turba is the Horde contact management application. It is a production level address book, and makes heavy use of the Horde framework to provide integration with IMP and other Horde applications. It supports SQL, LDAP, Kolab, and IMSP address books.

Ingo is an email-filter management application. It
is fully internationalized, integrated with Horde
and the IMP Webmail client, and supports both
server-side (Sieve, procmail, maildrop) and client-side
(IMAP) rule creation.

The Horde Application Framework is a modular, general-purpose Web application framework. It provides an extensive array of classes that are targeted at the common problems and tasks involved in developing modern Web applications.

astGUIclient is part of a suite of programs that are designed to
interact with the Asterisk PBX Phone system at a client computer level
to extend the functionality of your phone and system. The main GUI
application, astGUIclient, is a set of PHP Web-based scripts utilizing
Javascript and XMLHTTPRequest functions that work through a browser to
give realtime information and functionality with nothing more than an
Internet browser on the client computer. Another component included with
the astGUIclient package is the VICIDIAL auto-dialer, a list dialer
which can dial one-call-at-a-time or be put in auto-dial mode to act as
a predictive dialer. It can function as an ACD for inbound calls or for
Closer calls coming from VICIDIAL fronters, and allows for remote agents
that may only have a phone.

ZABBIX is an enterprise-class distributed monitoring solution designed to monitor and track performance and availability of network servers, devices, and other IT resources. It supports distributed and Web-based monitoring, auto-discovery, real-time monitoring, SLA assurance, trending, and more.